dart-sdk/pkg/dev_compiler/web/main.dart
2016-09-09 09:02:50 -07:00

79 lines
2.6 KiB
Dart
Executable file

#!/usr/bin/env dart
// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
@JS()
library dev_compiler.web.main;
import 'dart:async';
import 'package:args/command_runner.dart';
import 'package:js/js.dart';
import 'web_command.dart';
@JS(r'$setUpDartDevCompilerInBrowser')
external set setUpCompilerInBrowser(Function function);
Future main() async {
var args = ['compile'];
_runCommand(args);
}
/// Runs a single compile command, and returns an exit code.
Future<int> _runCommand(List<String> args,
{MessageHandler messageHandler}) async {
try {
// TODO: Remove CommandRunner and args if possible. May run into issues
// with ArgResults or ArgParsers.
var runner = new CommandRunner('dartdevc', 'Dart Development Compiler');
runner.addCommand(new WebCompileCommand(messageHandler: messageHandler));
setUpCompilerInBrowser = allowInterop((await runner.run(args)) as Function);
} catch (e, s) {
return _handleError(e, s, args, messageHandler: messageHandler);
}
return 1;
}
/// Handles [error] in a uniform fashion. Returns the proper exit code and calls
/// [messageHandler] with messages.
int _handleError(dynamic error, dynamic stackTrace, List<String> args,
{MessageHandler messageHandler}) {
messageHandler ??= print;
if (error is UsageException) {
// Incorrect usage, input file not found, etc.
messageHandler(error);
return 64;
} else if (error is CompileErrorException) {
// Code has error(s) and failed to compile.
messageHandler(error);
return 1;
} else {
// Anything else is likely a compiler bug.
//
// --unsafe-force-compile is a bit of a grey area, but it's nice not to
// crash while compiling
// (of course, output code may crash, if it had errors).
//
messageHandler("");
messageHandler("We're sorry, you've found a bug in our compiler.");
messageHandler("You can report this bug at:");
messageHandler(
" https://github.com/dart-lang/sdk/issues/labels/area-dev-compiler");
messageHandler("");
messageHandler(
"Please include the information below in your report, along with");
messageHandler(
"any other information that may help us track it down. Thanks!");
messageHandler("");
messageHandler(" dartdevc arguments: " + args.join(' '));
messageHandler("");
messageHandler("```");
messageHandler(error);
messageHandler(stackTrace);
messageHandler("```");
return 70;
}
}